<script setup lang="ts">
  let props = defineProps<{
    collapse: boolean
  }>()
  let emits = defineEmits(['update:collapse'])
  const toggle = () => {
    emits('update:collapse', !props.collapse)
  }
</script>
<template>
  <div class="header">
    <span @click="toggle">
      <el-icon-expand v-if="collapse"></el-icon-expand>
      <el-icon-fold v-else></el-icon-fold>
    </span>
  </div>
</template>
<style lang="scss" scoped>
  .header{
    height: 60px;
    padding: 0 20px;
    display: flex;
    align-items: center;
  }
</style>